- Jul 1, 2004Take a look at the following page:
You can use a 0.4 W potentiometer with the LM317T regulator.
I have built some battery power packs using a 0.4 W potentiometer
and a transistor ( BD244C ). They work just fine.
Without a regulator or transistor you must have at
least a 4 W potentiometer, but I do not recommend it.
I have built two cigar box layouts, but I have not put
the 9 V battery in the box. I just have a connection to
a battery power pack or to 230 V power pack.
--- In firstname.lastname@example.org, "Paul Hertel" <paulhertel@c...> wrote:
> Thankz. I was think the amps were pretty small. I know about the
> as I'm
> working on a cigar box layout to be run with a 9V battery.
> Last night I had the pleasure of burning up a potentiometer. A 9V
> made the insides glow nicely.
> Then the tell tail smell of burnt electronics!
> Maybe I'll have to get the voltage regulator from ZTrack. I was
> a cheaper alternative.
> Thankz again!
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